Increase (boost) a low voltage from a battery or other source to a stable 3.3V output with the XCL105B331H2-G and STM32F031K6
Synchronous step-up DC/DC converter with integrated switching FETs
Published Oct 01, 2024
Click board™
Boost 11 Click
Dev. board
Nucleo 32 with STM32F031K6 MCU
Compiler
NECTO Studio
MCU
STM32F031K6
Provide a reliable voltage boost for powering low-power sensors or other industrial electronics from low-voltage sources
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Hardware Overview
How does it work?
Boost 11 Click is based on the XCL105B331H2-G, a synchronous step-up DC/DC converter from TOREX Semi. This component includes a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, N-channel driver FET, P-channel synchronous switching FET, and current limiter circuit. It can start operating from an input voltage of 0.9V, making it suitable for devices using single Alkaline or Nickel-metal hydride batteries. The operating voltage range spans from 0.9V to 6V, which applies to the VIN terminal. This versatility makes it ideal for industrial equipment, Internet of Things (IoT) devices, wearables, and any applications
prioritizing battery life. The XCL105B331H2-G operates by using the error amplifier to compare the internal reference voltage with the feedback voltage. The resulting output undergoes phase compensation and is fed to the PWM comparator. This comparator matches the signal from the error amplifier with the ramp wave circuit output, sending the resulting signal to the buffer driver circuit to control the PWM duty cycle. This continuous process stabilizes the output voltage, fixed at 3.3V and available at the VOUT terminal. Additionally, an output signal is available on the AN pin of the mikroBUS™ socket. The Boost 11 Click uses the EN pin of the mikroBUS™ socket in addition to the
AN pin. When the EN pin is set to a high logic level, the output voltage is raised via the Start-Up mode, initiating normal operation. When set to a low logic level, the IC enters Standby mode, significantly reducing current consumption. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VIO SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
Features overview
Development board
Nucleo 32 with STM32F031K6 MCU board provides an affordable and flexible platform for experimenting with STM32 microcontrollers in 32-pin packages. Featuring Arduino™ Nano connectivity, it allows easy expansion with specialized shields, while being mbed-enabled for seamless integration with online resources. The
board includes an on-board ST-LINK/V2-1 debugger/programmer, supporting USB reenumeration with three interfaces: Virtual Com port, mass storage, and debug port. It offers a flexible power supply through either USB VBUS or an external source. Additionally, it includes three LEDs (LD1 for USB communication, LD2 for power,
and LD3 as a user LED) and a reset push button. The STM32 Nucleo-32 board is supported by various Integrated Development Environments (IDEs) such as IAR™, Keil®, and GCC-based IDEs like AC6 SW4STM32, making it a versatile tool for developers.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
32
Silicon Vendor
STMicroelectronics
Pin count
32
RAM (Bytes)
4096
You complete me!
Accessories
Click Shield for Nucleo-32 is the perfect way to expand your development board's functionalities with STM32 Nucleo-32 pinout. The Click Shield for Nucleo-32 provides two mikroBUS™ sockets to add any functionality from our ever-growing range of Click boards™. We are fully stocked with everything, from sensors and WiFi transceivers to motor control and audio amplifiers. The Click Shield for Nucleo-32 is compatible with the STM32 Nucleo-32 board, providing an affordable and flexible way for users to try out new ideas and quickly create prototypes with any STM32 microcontrollers, choosing from the various combinations of performance, power consumption, and features. The STM32 Nucleo-32 boards do not require any separate probe as they integrate the ST-LINK/V2-1 debugger/programmer and come with the STM32 comprehensive software HAL library and various packaged software examples. This development platform provides users with an effortless and common way to combine the STM32 Nucleo-32 footprint compatible board with their favorite Click boards™ in their upcoming projects.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Nucleo 32 with STM32F031K6 MCU as your development board.
Software Support
Library Description
This library contains API for Boost 11 Click driver.
Key functions:
boost11_active_mode- This function activates the boost operating mode.boost11_read_an_pin_voltage- This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.
Open Source
Code example
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.
/*!
* @file main.c
* @brief Boost 11 Click Example.
*
* # Description
* This example demonstrates the use of Boost 11 Click board
* by controlling the output state.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization of GPIO module, log UART, and activate the boost operating mode.
*
* ## Application Task
* The demo application reads measurements of the output voltage level [V].
* Results are being sent to the UART Terminal, where you can track their changes.
*
* @author Nenad Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "boost11.h"
static boost11_t boost11; /**< Boost 11 Click driver object. */
static log_t logger; /**< Logger object. */
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
boost11_cfg_t boost11_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
boost11_cfg_setup( &boost11_cfg );
BOOST11_MAP_MIKROBUS( boost11_cfg, MIKROBUS_1 );
if ( ADC_ERROR == boost11_init( &boost11, &boost11_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
boost11_active_mode( &boost11 );
Delay_ms ( 100 );
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
float voltage = 0;
if ( BOOST11_OK == boost11_read_an_pin_voltage ( &boost11, &voltage ) )
{
log_printf( &logger, " Output Voltage : %.3f[V]\r\n\n", voltage );
Delay_ms ( 1000 );
}
}
int main ( void )
{
/* Do not remove this line or clock might not be set correctly. */
#ifdef PREINIT_SUPPORTED
preinit();
#endif
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
Additional Support
Resources
Category:Boost
